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The image shows an Excel spreadsheet analyzing data related to "Número de países miembros de un tratado internacional" (Number of member countries in an international treaty). The data includes values (Datos): 25, 27, 30, 32, and 35. Calculations include variance (15.7), standard deviation (3.96), and average (29.8). A table calculates z-scores using a formula and a "tablam" (table). Negative z-values and their corresponding areas are also provided. A small table shows the range from 25 to 27 and has a frequency value of 8.
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